Using our three ETF models, Best(SPY-SH), Best1(Select SPDR) and Best(SSO-TLT) equal weighted in a combination model, we demonstrate that the combo would have produced high annualized returns of 34.3% with a low drawdown of -12.9% and low volatility. Additionally, due to the very high liquidity of its component ETFs, the combo could support a huge portfolio size.